Water-gage or gage-cock



Y. TAJIMA. WATER GAGE 0R GAGE COCK.

APPLICATIONHLED OCT 25, 191B.

L 'm 'mo Patented Mar. 29, 1921.

- eniar:

vosnruar TAJIMA, OFVOISAKAFU, JArAn.

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WATER-GAGE 0R GAGE-COOK.

7 Specification of Letters P aten t. P m- 1 m 29 1921 Application filedOctober 25, 1918. Serial No. 259,702.

useful water gage o'r gage cock in which the r body of a-plug is madehollow, three holes or openings are bored around the outer surface ofthe "said plug body with an interval" of ninety degrees, respectively,"axpassage to communicate'with the interior of a boiler by alining withany of the said three holes is specially provided at one side of theplug bOX,"2t11dL'ValVe seatis provided in a valve chamberhaving aballvalve therein and arrangedat that part of the plugpprojecting to theinside of the'boiler. An object of my present invention 'isto providea"water gage or gage cock-which simplifies the process of .cleaningsthegage glass. Another object of my invention is to provide'a wat'ergagewhich can beused eifectively 'as test cock whenever" needed in ad-'ditiontoits regular" service.

A further object of my invention is to provide awater gage having safetydevice so arranged andconstructed that the ball valve arrangedthereimpermits steam or hot water to pass freely under all "conditionsexceptthe one case where the'body' of the water-gage has beenbrokenoff'by accident, when the said ball immediately stopsthe passage of theelements to? insure absolute safety and eifect economy.

A still further object of my invention is to gage cheaper in cost ofprovide water p p manufacture than the water gage -'ofx;my originalinvention for which l applied for patent i the serial number of whichbeing 241,031, filed June "20, 19185 by reducing volume and eifectingajconsiderable saving in material or materials Other objects andadvantages to be" derived from the use of mypresent'invention will beapparent from the following detailed description and the claimstakenwith an inspection of the accompanying drawings in which:

Figure '1) is a side" 'e'levational view of the invention as attachedtothe end plate of a ings, A'is an end plate of a boiler; 1 is a a plugbox, wh1ch 1s screwed or boltedto the end plate; isthe body'fof a plu gand is pI'OV1Ci6d'W1tl1 a ho1lowspace3 therein; 4,

4, and 4 represent, respectively, holes boredaround the outer surface ofthe plug body; isa'gage glass 5 is ablow ofi open ng 6 1s a passage tocommunicate with the interior of the boiler'through themedium of anyoneof the three hole 4', if, and

4f; 7 is acleaningmember rotatablyprovlded to the inner end of the plug,byturnng itwith the plug the lime matter which clogs the passage ofsteam or-hot water may beremoved; 8is an enlarged portion of thecleajningmember and designed to serve as a seat for aball valve 11; 9'is anextension of the plug located inside of the boiler;' 1O is a valvechamber formed bythe extensions 9 and 9;' -11 is a ballvalve'intendedfto auto matically close the' passage leading from theinterior of the boilerto' the inside of the i plug, whenever reqtnred;and, 12 is'a' plug -to prevent the ball 'valve'from slippingout of theval've'chamber, this plug'being 'provided with an opening 13 to letsteam or hot water pass therethrough freely. j

As a first step, the plugboxes 1 and l are,

respectively, screwfid or bolted tofthe end plate A of ab'oilerland'fthese are connected airotlght'by means of agage glass andso far "my'present invention is similar to or- 'dinaryf watergageshitherto in use The differences between myinventjion and the sa dord1naryfgages',that is, the features of my invention,lie in thefact'that, through rotations of the plug-bodyQ, the various connect-ionsof the passagefiwith the holes a, and 4c bored around the outer'surfaceof the hollow space 3 of'the said plug body and the various positions ofrotation of the upper plug" relative to those. ofthe lower plug makeitpossible in a certain case to ascertain the water level inside theboiler to facilitate cleaning'the gage glass in another case byisolating or insulating it from the interior of the boiler, to let hotWater jet out to the outside through the blow-off opening, and so on,and that the cleaning member 7 serves as the seat for the ball valve 11vto let steam or hot water pass freely on to the interior of the plug atnormal times and even when the pressure inside the boiler is higher thanthat inside the plug, thesaid ball valve completely closing or stoppingthe passage of steam or hot water only when the body of the cock isbroken off by accident and the cleaning member is removed.

In short, the features of my present invention lie in the fact that itperforms various functions through rotations of the plug body providedin each of the upper and lower plugs, and that through the uniquefeature of the cleaning member the use of the ball. valve has" beenconsiderably extended, though the ball valve itself has been inexistence.

To describe more fully about directions 1 ofrotations of the, upper andlower bodies and their functions:

When both the upper plug body and the lower one are rotated to theposition as shown in Fig, 1, steam or hot water will enter the hole 4through the passage 6, pass through 4 and 4c, and escape through theopeningo when the upper plugbody and the lower one are placed in acorresponding position by rotating them by ninety degrees, thegage glasswill communicate with both p us.

the steam and hot water inside the boiler through the upper and lowerplug boxes and the pressure will be uniform throughout the wholeapparatus, so that the water level inside the boiler will be preciselyascertained by referring to the height of water inside the water gage;and, when the upper plug box and the lower one are rotated anotherninetydegrees, the gage glass will be utterly'isolated or insulated from theinside of the boiler,,and then it is possible to clean the gage glassthoroughly. T

y present invention is an improvemen on my original invention, referredto here- I inbefore, and by comparing these two water ably reduced andremarkable saving in material has been efiected in the presentinvention, y

Having this fully described my invention, what I claim as new-and desireto securefby Letters Patent is: y

1.v In a water gage, a body having an internal chamber and opposed portscommunicating with. thechamber, said body also having an inlet passagecommunicating at one terminal with therchamber in the plane of theopposed ports, and, a plug rotatably mounted in the ported portion ofthe body having aninternal chamber and a plurality of portscommunicating therewith adapted to be moved into registration with theports and passage of the'body whereby to establish communication"between the two 0pposed' ports with or without connection with thepassage, orconnect the passage with both of the opposedports or eitherof said ports separately. r I Y x l 2. In a water gage, a body having aninternal" chamber and opposed ports communicating therewith, said bodyalso having a passage-ycommunicating at one terminal with the chamber inthe plane of the'op posed portsiand communicating at its oppositeterminal with said chamber at a point remote from the opposed ports, anda rotary plug mounted in the 'ported portion of the body having aninternal chamber and a plurality of ports communicating there withadapted to, be selectively registered with the ports and passage ofthe-body whereby to establish "communication between the: two opposedports-with orwithout connection with the passage or .to coni nect thepassage with-both of the opposed ports or either of said port'sseparately.

3; In awatergage, a body having an internal chamber andopposed portscommunicating .with. the chamber, said body also having a passagecommunicating at one terminal with the chamber in the plane of theopposed ports and communicating atl-its opposite terminal with thechamber at a point remote fromsaid ports; a valve seatin said I chamberintermediate the terminals of the passage. a valvelassociatediwith saidseat.

and ;a plug rotatablyvmountedin the ported portion of ,the body" havingan internal chamber and a plurality of, :ports adapted for registrationwith the portsand passage ofjthe body whereby to establish communicationbetween the two opposed ports with r or without communication with thepassage or to establish communicationjbetween the passage and bothof'the opposed ports or either of said ports separately.

4. In combination; a body'provided with herein adapted to receive a gagetube, said odv also having a passage communlcating at one: terminal inthe plane of said port,

longitudinal "opening and having a port a ported plug adapted toestablish communication between the terminal of the passage and the Portof the body, said plug being removable through one end of the body, aninternal valve seat adjacent the opposite terminal of the body, a valveadapted to engage said seat to prevent passage of fluid through saidbody, and means carried by said plug normally retaining the valve inopen position.

5. In a water gage, a body having an internal chamber and a passagecommunicating at one terminal with the chamber, said body having a portdisposed inthe plane of one terminal of the passage, a gage tube engagedwith the port, .a ported plug rotatably mounted in one terminal of thebody stricted to provide a valve seat, a valve en gage-able with saidseat and normally re- 1 tained in open position by engagement of aportion of said plug, therewith, and means carried by said plug adaptedto remove ac cumulations from the wall of the restricted portion of thechamber of the body during removal of the plug.

In testimony whereof I afiix my signature hereto. v

YOSHIUJI TAJIMA. [1..s.]

